Author Topic: Kibblewhite CB400F Valves and Guides (Read 6268 times)

Kevin · « **on:** February 28, 2011, 11:23:51 PM »

Guys,
I am putting together a deal with Kibblewhite to manufacture stainless steel valves and bronze alloy valve guides for the CB400F.
The valves are their famous "Black Diamond" stainless steel with welded stellite tips and the guides are Bronze alloy C630 (Amco 45) guides, both intake and exhaust guides will be machined to accept seals.

The intake valves are +1.0 mm over stock size.

I am looking to the group to see what the interest in these would be. To have these manufactured is a considerable cash outlay. I am looking for people that are willing to go in on it with me.
If you are interested in getting in on this deal it will cost you $425 for the valves and guides (seals not included). That includes delivery in the USA. That is less than what the valves alone would cost if we didn't do a group purchase.
Turn around time is 45-60 days from the time I sign the contract.

Contact me directly if you are interested.
Thanks,
Kevin

Tim2005 · « **Reply #1 on:** March 01, 2011, 10:37:01 AM »

Hi Kevin

Did you know you can already get these from Japan? They are somewhere on this site (which also features some bizarre translations!),

http://www.excite-webtl.jp/world/english/web/?wb_url=http%3A%2F%2Fwww.brcinc.co.jp%2F&wb_lp=JAEN&wb_dis=2&wb_submit=+%96%7C+%96%F3+

I quote " one set of configuration with eight units 〉
- It manufactures it from the same size with irregular Yoshi sold at that time. It is high durability because of the valve manufacturer that adopts an expensive material, and is skillful only for the race, and made in Japan of safety. The horsepower goes up by making it to the big valve, and the engine comes to improve power.

- Attention
- Because the size grows, the seat cutting of the valve hole of the cylinder head is needed.
- The size of the valve becomes IN･27.5Φ EX･24.0Φ.
- It becomes the size-up of about 1mm from a pure valve.
- Because the total length corresponds to the seat cutting, it is 0.5 ? short size, and it is possible to use it immediately only by the seat cutting according to a pure size.
- It is possible to use it even in a general public road for the race."

They are 39900 yen. There's also guides listed on there too.

Hope it helps

MRieck · « **Reply #2 on:** March 01, 2011, 10:58:52 AM »

I have seen some import valves made for the smaller Honda's. They were junk. i do not know about the outfit listed but the valves people sent to me said made in Japan.

Kevin · « **Reply #3 on:** March 01, 2011, 10:59:55 AM »

Hi Tim,
Yes I did know about the Japan connection. I am the distributor for MC Again of Japan.
The valves that BRC is selling are not Kibblewhite and at 39,900 yen (not counting postage) you are looking at about $500.00 without guides. The guides they are offering are not bronze alloy, they look to be steel. If you have stainless valves you will want the bronze alloy guides too.

I think the Kibblewhite deal is a great deal for those of us that are looking for more power out of our CB400F, plus you can not get better quality than Kibblewhite, plus they are made in the USA.

It's a win / win for everyone if there are enough guys interested.

Kevin

jessezm · « **Reply #4 on:** March 01, 2011, 01:20:42 PM »

Kevin, what kind of machining costs do you think would be associated with redoing a set of heads with these parts? Do you think it's something my local machine shop could do if I gave them the parts (they did a great job with a simple head job last year for $125). i have an extra set of heads in great shape I was thinking about fooling around with at some point so I could take off my stock heads and bolt on something more exciting...

Kevin · « **Reply #5 on:** March 01, 2011, 01:34:04 PM »

Hey Jesse,
I don't know what the machine shop will charge.
I think your best bet would be to give them a call and ask them. Make sure they know that the guides will need to be honed to final size and that new seats will need to be cut for the bigger valves.
Kevin

jessezm · « **Reply #6 on:** March 01, 2011, 01:42:48 PM »

Cool I'll check it out, thanks. You sell the Kibble White springs, too, don't you? I've got a webcam (mild grind) but am running stock springs at the moment, and am sure it could benefit from heavier-duty springs with all the other changes...

Kevin · « **Reply #7 on:** March 01, 2011, 01:44:37 PM »

Yup, sure do.
I'll get you a deal on the springs if you decide to do the valves. :-)

jessezm · « **Reply #8 on:** March 01, 2011, 01:47:19 PM »

Cool, let me consult my conscience....

Kevin · « **Reply #9 on:** March 01, 2011, 02:36:24 PM »

I just checked with your conscience and it thinks you should do it :-)

MRieck · « **Reply #10 on:** March 01, 2011, 02:42:09 PM »

Quote from: Kevin on March 01, 2011, 01:34:04 PM

Hey Jesse,
I don't know what the machine shop will charge.
I think your best bet would be to give them a call and ask them. Make sure they know that the guides will need to be honed to final size and that new seats will need to be cut for the bigger valves.
Kevin

I'd also let them know the guides are offset in the head. It is not your typical valve job.

Bodi · « **Reply #11 on:** March 02, 2011, 10:33:31 AM »

Mike, what does that mean? I've had valve guides done and never heard there was a weirdness.

jessezm · « **Reply #12 on:** March 02, 2011, 01:41:15 PM »

Quote from: Kevin on March 01, 2011, 02:36:24 PM

I just checked with your conscience and it thinks you should do it :-)

Haha! Now let me check with my bank account and see if it agrees with my conscience...

Kevin · « **Reply #13 on:** March 02, 2011, 02:03:14 PM »

Quote from: jessezm on March 02, 2011, 01:41:15 PM

Quote from: Kevin on March 01, 2011, 02:36:24 PM
I just checked with your conscience and it thinks you should do it :-)

Haha! Now let me check with my bank account and see if it agrees with my conscience...

I just checked with your bank account, it isn't quite in agreement with your conscience but deferred me to your credit card. Your credit card is totally on board with your conscience :-)
Remember it's easier to ask for forgiveness than it is to ask for permission!

MRieck · « **Reply #14 on:** March 02, 2011, 02:16:26 PM »

Quote from: Bodi on March 02, 2011, 10:33:31 AM

Mike, what does that mean? I've had valve guides done and never heard there was a weirdness.

The guides do not set 90 degrees to the head sealing surface. They are offset. When doing an average head on the Serdi you set the head at an angle to get a straight shot at the guide and move the floating head down the line to each guide. You can't do this on the 400 head secondary to the guides having this "tilt" to them. I can't remember if it the tilt is lateral or medial biased...all I know is there is an offset. This would not cause a problem if using Neway cutters or stones...only on the Serdi or a new CNC valve job machine which basically indexes the guides off the head deck. I have pictures somewhere showing this.

MRieck · « **Reply #15 on:** March 02, 2011, 02:17:35 PM »

Kevin...are you working with Warren on these valves?

Kevin · « **Reply #16 on:** March 02, 2011, 02:38:36 PM »

Quote from: MRieck on March 02, 2011, 02:17:35 PM

Kevin...are you working with Warren on these valves?

Yup, we have been working on putting this together for several months now.

fatmatt650 · « **Reply #17 on:** March 02, 2011, 03:02:44 PM »

If I can be of any assistance let me know. I have a 400f parts bike and live about 5 min. from Kibblewhites shop. I go by right past there every day.

jessezm · « **Reply #18 on:** July 28, 2011, 06:23:51 PM »

Kevin, just curious, what ever came of this? I am considering setting up a spare 400f head and I may have a little extra cash after selling my car later this summer. Also, do you have any suggestions for porting? I just got a spare set of carbs off ebay and I was thinking about breaking them down and sending them out to Rick Denoon for boring. If I do that I think it'd be pretty cool to have better breathing heads (and maybe one of those MC Again pipes as well!). How much extra umph do you think I could get out of the heads (without sacrificing reliability)? Also, do you think an oil cooler or re-worked oil pump would be a must with that set up? I've already got the 466 kit and mild webcam...

Kevin · « **Reply #19 on:** July 28, 2011, 06:31:40 PM »

Hey Jesse,
We decided to go another route.
I have gone back to my old valve and guide supplier and helped them source the needed materials to make the parts. It will be a couple of months before they are ready.

I do not have any suggestions for porting, I too will be looking for someone soon.

I have no idea how much power you will gain, every bike is set up different, but it sure couldn't hurt ;-)

An oil cooler and reworked oil pump would be helpful, I am not sure it's necessary ~ except for peace of mind.

jessezm · « **Reply #20 on:** July 28, 2011, 06:45:54 PM »

Thanks, Kevin. So does that mean you will have some available for sale in the future? Will make a note to let me know when you get them in if that's the case? Thanks!

I was thinking of seeing what Mrieck would charge to do the porting, and whether he's done 400 heads before. According to Hondaman, it seems like the 400f did not have the same breathing issues as the larger fours.

MRieck · « **Reply #21 on:** July 28, 2011, 08:12:51 PM »

I have ported 400 heads.

jessezm · « **Reply #22 on:** July 28, 2011, 08:27:59 PM »

Quote from: MRieck on July 28, 2011, 08:12:51 PM

I have ported 400 heads.

Can you tell me what it involves generally speaking? I'd be happy to send them off to you if I can afford it. I imagine it would make the most sense to wait for the valves and guides to come in and have you put it all together at once? Thanks! (feel free to PM with a cost estimate)

Kevin · « **Reply #23 on:** July 28, 2011, 10:17:55 PM »

Hi Jesse,
Yes, I will have a very limited supply of valves and guides available. I think there is only one set that is not spoken for.
We have decided to go with .75 mm over on the intake valve, the exhaust valve is the stock size.
The valves and guides are about $800.00 for the set.

Kevin

camelman · « **Reply #24 on:** July 28, 2011, 10:34:27 PM »

Kevin, you had me at "guys". I'm in.

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Author Topic: Kibblewhite CB400F Valves and Guides (Read 6268 times)